Hydromax and a GMC motorhome

Testing on a fixture like the dash Sue is my foot model/pedal pusher Front pressure on the coach with 80mm calipers Rear pressure on the coach 80mm mid and 66mm rear calipers

Under construction and pivot points

Booster adapter

original clevis connection with rubber bush

O ring boss adapter for remote reservoir

pressures at maximum

Method to measure pedal pressure

Test rig with 1 square inch area air cylinder

Angularity check

Observed pedal force and output pressure

hood clearance

Dash protrusion

F-250 reservoir and remote adapter

Additional pump and fourth pulley